US3202939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Balanced transistor translating network
Assignee: AT&T Inc
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Filing: 1961-12-29
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Granted: 1965-08-24
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Expires: 1981-12-29
Abstract
No abstract record available.
Inventors
- 👤 Paul A Reiling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
181 words
APPARATUS FOR TRANSLATING A HIHG FREQUENCY SIGNAL WAVE FROM A SOURCE TO A LOAD WHICH COMPRISES A PAIR OF LIKE TRANSISTORS EACH HAVING AN INPUT ELECTRODE, AN OUTPUT ELECTRODE AND A COMMON ELECTORDE, SAID COMMON ELECTRODES BEING DIRECTLY CONNETED TOGETHER AND TO FIRST COMMON POINT, SAID OUTPUT ELECTRODES BEING CONNECTED TO A SECOND COMMON POINT, A PATH, INCLUDING A POTENTIAL SOURCE, EXTENDING FROM SAID FIRST COMMON POINT TO SAID SECOND COMMON POINT, A LOAD COUPLED TO SAID OUTPUT ELECTRODES, AN INPUT TRANSFORMER HAVING A PRIMARY WINDING SUPPLIED WITH SAID SIGNAL WAVE AND A SECONDARY WINDING OF WHICH THE END TERMINALS ARE CONNECTED TO SAID UNPUT ELECTRODES, RESPECTIVELY, FOR APPLYING SIGNAL VOLTAGES DEVELOPED FROM SAID WAVE TO SAID INPUT ELECTRODES IN PUSH-PULL, WHEREBY MINORITY CARRIERS ARE INJECTED INTO SAID TRANSISTORS IN ALTERNATION AND ON ALTERNATE HALF CYCLES OF SAID SIGNAL WAVE, THUS TO DRIVE THEM INTO THEIR WORKING STATES, EACH OF SAID TRANSISTIORS BEING SO PROPORTIONED THAT THE REVERSE-CURRENT DRAIN OF SAID MINORITY CARRIERS FROM ITS INPUT ELECTRODE IN ITS NONWORKING STATE ENDURES FOR AT LEAST ONE-HALF PERIOD OF SAID SIGNAL WAVE.
Claim 2
Dependent Claim
181 words
APPARATUS FOR TRANSLATING A HIHG FREQUENCY SIGNAL WAVE FROM A SOURCE TO A LOAD WHICH COMPRISES A PAIR OF LIKE TRANSISTORS EACH HAVING AN INPUT ELECTRODE, AN OUTPUT ELECTRODE AND A COMMON ELECTORDE, SAID COMMON ELECTRODES BEING DIRECTLY CONNETED TOGETHER AND TO FIRST COMMON POINT, SAID OUTPUT ELECTRODES BEING CONNECTED TO A SECOND COMMON POINT, A PATH, INCLUDING A POTENTIAL SOURCE, EXTENDING FROM SAID FIRST COMMON POINT TO SAID SECOND COMMON POINT, A LOAD COUPLED TO SAID OUTPUT ELECTRODES, AN INPUT TRANSFORMER HAVING A PRIMARY WINDING SUPPLIED WITH SAID SIGNAL WAVE AND A SECONDARY WINDING OF WHICH THE END TERMINALS ARE CONNECTED TO SAID UNPUT ELECTRODES, RESPECTIVELY, FOR APPLYING SIGNAL VOLTAGES DEVELOPED FROM SAID WAVE TO SAID INPUT ELECTRODES IN PUSH-PULL, WHEREBY MINORITY CARRIERS ARE INJECTED INTO SAID TRANSISTORS IN ALTERNATION AND ON ALTERNATE HALF CYCLES OF SAID SIGNAL WAVE, THUS TO DRIVE THEM INTO THEIR WORKING STATES, EACH OF SAID TRANSISTIORS BEING SO PROPORTIONED THAT THE REVERSE-CURRENT DRAIN OF SAID MINORITY CARRIERS FROM ITS INPUT ELECTRODE IN ITS NONWORKING STATE ENDURES FOR AT LEAST ONE-HALF PERIOD OF SAID SIGNAL WAVE.
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US2920189A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |